Contacts of the strand formed by residues 233 - 237 (chain C) in PDB entry 3AP3
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with CYS 233 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163C LEU* 4.7 3.8 - - - -
166C SER* 5.7 0.9 - - - -
178C PHE* 3.4 22.7 - - + -
180C LEU* 4.5 8.1 - - - -
225C CYS* 2.0 67.5 - - - +
226C MET* 4.9 1.7 - - - +
228C VAL* 3.7 12.6 - - + -
229C GLY 3.0 9.5 + - - +
230C LYS* 3.8 14.3 - - - +
231C GLU 3.8 0.2 - - - -
232C LYS* 1.3 79.2 - - - +
234C LEU* 1.3 64.6 + - - +
235C PRO* 3.7 5.5 - - - +
255C PHE* 4.0 2.9 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 234 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
178C PHE 2.8 8.9 + - - +
179C LEU* 3.7 12.2 - - + -
180C LEU 3.2 22.7 + - - -
230C LYS 5.3 0.7 - - - +
233C CYS* 1.3 75.3 - - - +
235C PRO* 1.4 89.6 - - + +
236C VAL* 3.5 4.6 + - + +
251C LEU* 4.4 4.0 - - + +
252C ILE* 3.9 28.7 - - + -
255C PHE* 3.5 52.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with PRO 235 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
180C LEU* 3.7 11.4 - - + +
182C VAL* 4.8 8.3 - - + -
222C TYR* 4.0 30.5 - - + +
225C CYS* 4.2 4.7 - - - -
226C MET* 4.2 11.9 - - + -
233C CYS 3.7 8.7 - - - +
234C LEU* 1.4 101.4 - - + +
236C VAL* 1.3 59.9 + - - +
237C TYR* 4.1 24.6 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 236 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
84C MET* 4.1 7.0 - - - -
179C LEU* 3.9 27.4 - - + -
180C LEU 3.1 9.9 + - - +
181C MET* 3.5 29.3 - - + +
182C VAL* 2.7 28.9 + - - +
234C LEU* 3.8 14.4 - - + +
235C PRO* 1.3 76.1 - - - +
237C TYR* 1.3 63.3 + - - +
238C TYR 3.4 1.2 + - - -
241C LEU* 4.6 8.3 - - + -
248C SER* 5.8 1.3 - - - -
252C ILE* 3.8 31.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 237 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
182C VAL* 3.3 26.0 - - + -
222C TYR* 5.5 3.6 + - - -
235C PRO* 4.5 23.4 - - + +
236C VAL* 1.3 71.9 - - - +
238C TYR* 1.3 54.1 + - - +
239C GLU* 3.2 7.0 - - + +
240C GLN* 2.9 31.4 + - + +
241C LEU* 2.8 34.7 + - - +
323C LEU* 3.0 36.5 + - + +
325C TYR* 3.2 25.4 - + - -
----------------------------------------------------------
Back to top of page
A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il